Alzheimer's Alzheimer's

Rats and people may rely on "metamemory" in a variety of different ways, scientists say. For a rat, it's likely about knowing whether you remember that predator in the distance; for people, knowing what we don't know helps us navigate social interactions. fotografixx/Getty Images/iStockphoto hide caption

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fotografixx/Getty Images/iStockphoto

From Rats To Humans, A Brain Knows When It Can't Remember

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Researchers find that dementia patients who engage in activities such as gathering photographs and talking about family see improvements in their quality of life and are less agitated. Owen Franken/Getty Images hide caption

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Owen Franken/Getty Images

Small pulses of electricity to the brain have an effect on memory, new research shows. Science Photo Library/SCIEPRO/Getty Images hide caption

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Science Photo Library/SCIEPRO/Getty Images

Electrical Stimulation To Boost Memory: Maybe It's All In The Timing

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A colored magnetic resonance imaging (MRI) scans of the brain of a 76-year-old patient with dementia shows the brain has atrophied and the dark brown fluid-filled spaces have become enlarged. Zephyr/Science Source hide caption

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Zephyr/Science Source

Cancer Drug That Might Slow Parkinson's, Alzheimer's Headed For Bigger Tests

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Diseased brain tissue from an Alzheimer's patient showing amyloid plaques (in blue) located in the gray matter of the brain. Dr Cecil H Fox/Science Source/Getty Images hide caption

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Dr Cecil H Fox/Science Source/Getty Images

Education may help brains cope with cognitive decline, and treatments for high blood pressure and other health problems may decrease dementia risk. Alfred Pasieka/Science Photo Library/Getty Images hide caption

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Alfred Pasieka/Science Photo Library/Getty Images

Dementia Risk Declines, And Education May Be One Reason Why

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This image is from lab-grown brain tissue — a minibrain — infected by Zika virus (white) with neural stem cells in red and neuronal nuclei in green. Courtesy of Xuyu Qian and Guo-li Ming hide caption

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Courtesy of Xuyu Qian and Guo-li Ming

'Minibrains' Could Help Drug Discovery For Zika And For Alzheimer's

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The Old Town Museum in Aarhus, Denmark has created a "House of Memories" that's an exact replica of a 1950s apartment. It's intended for Alzheimer's patients, whose memories may be triggered by the sights, sounds and smells from the period, researchers say. Courtesy of Old Town Museum hide caption

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Courtesy of Old Town Museum

Denmark's 'House Of Memories' Re-Creates 1950s For Alzheimer's Patients

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Experimental drugs that clear clumps of proteins from the brains of Alzheimer's patients haven't panned out yet. Science Photo Library/Pasieka/Getty Images hide caption

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Science Photo Library/Pasieka/Getty Images

Test Of Experimental Alzheimer's Drug Finds Progress Against Brain Plaques

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Hiroyuki Yamamoto, a crossing guard in Matsudo, Japan, has been trained in how to recognize and gently approach people who are wandering, or have other signs of dementia, in ways that won't frighten them. Ina Jaffe/NPR hide caption

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Ina Jaffe/NPR

Japanese City Takes Community Approach To Dealing With Dementia

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Parkinson's disease, smoking, certain head injuries and even normal aging can influence our sense of smell. But certain patterns of loss in the ability to identify odors seem pronounced in Alzheimer's, researchers say. CSA Images/Color Printstock Collection/Getty Images hide caption

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A Sniff Test For Alzheimer's Checks For The Ability To Identify Odors

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